洁田稻稻田杂草防控及杂草稻种群耐药性研究

doi:10.16178/j.issn.0528-9017.20240638

浙江农业科学 ›› 2024, Vol. 65 ›› Issue (11): 2668-2671.DOI: 10.16178/j.issn.0528-9017.20240638

洁田稻稻田杂草防控及杂草稻种群耐药性研究

徐伟东(), 陆强^*(), 姚张良, 李友发, 富昊伟, 张馨月, 董俊杰, 曹奎荣, 马兴华

嘉兴市农业科学研究院,浙江嘉兴 314000

收稿日期:2024-05-23 出版日期:2024-11-11 发布日期:2024-11-15
通讯作者: 陆强,高级农艺师,从事农作物病虫害研究与推广,E-mail:jxluqiang@163.com。
作者简介:徐伟东,高级农艺师,硕士,从事农作物病虫草害防治技术研究与推广,E-mail:wdxu@zju.edu.cn。
基金资助:
市级农科院联盟区域示范性项目(2023SJLM09);嘉兴市科技计划项目(2022AZ100003)

Study on weed control in clear rice field and the resistance of weedy rice species

XU Weidong(), LU Qiang^*(), YAO Zhangliang, LI Youfa, FU Haowei, ZHANG Xinyue, DONG Junjie, CAO Kuirong, MA Xinghua

Jiaxing Academy of Agricultural Sciences, Jiaxing 314000, Zhejiang

Received:2024-05-23 Online:2024-11-11 Published:2024-11-15

摘要/Abstract

摘要：

为探索咪唑啉酮类除草剂对洁田稻稻田常规杂草和杂草稻的防治效果及不同杂草稻种群对咪唑乙烟酸的耐药性,采用大田试验在不同时期喷施不同浓度的咪唑乙烟酸水剂防治田间不同杂草及室内盆栽试验鉴定杂草稻耐药性。结果表明:咪唑乙烟酸在水稻播后20 d施用,对田间杂草稻具有较好的防效,1 200 mL·hm^-2咪唑乙烟酸对田间杂草稻的防效达92.8%。过早施药对杂草稻防效普遍低于90%,过晚施药需加大剂量才能达到较好的防效。咪唑乙烟酸供试中、高浓度对稗草和千金子具有较好的防效,而对多花水苋和丁香蓼等阔叶杂草防效较差。耐药性鉴定结果表明,不同区域的杂草稻种子对咪唑乙烟酸较敏感,未产生明显的耐药性。

关键词: 咪唑乙烟酸, 洁田稻, 杂草防控, 杂草稻种群, 耐药性

Abstract:

The study aimed to explore the control effects of imidazolinone herbicides on common weeds and weedy rice in the fields of clear rice, as well as the resistance of different weedy rice species to imazethapyr. Field experiments were conducted to control various weeds by spraying different concentrations of imazethapyr solution at different stages, and pot experiments were conducted to identify the resistance of weedy rice. The results showed that spraying imazethapyr 20 days after rice seeding controlled weedy rice in the field effectively, with a control efficiency of 92.8% at a low concentration of 1 200 mL·hm^-2. Early application resulted in a control efficiency below 90% generally, while late application required higher dosages to achieve better control efficiency. Moderate and high concentrations of imazethapyr demonstrated good control efficiency against Echinochloa crusgalli and Leptochloa chinensis, but poor control against broadleaf weeds such as Ammannia multiflora and Ludwigia prostrata. The resistance identification results indicated that the weedy rice species from different regions tested were sensitive to imazethapyr, showing no significant resistance.

Key words: imazethapyr, clear field rice, weed control, species of weedy rice, resistance

中图分类号:

S451.21

徐伟东, 陆强, 姚张良, 李友发, 富昊伟, 张馨月, 董俊杰, 曹奎荣, 马兴华. 洁田稻稻田杂草防控及杂草稻种群耐药性研究[J]. 浙江农业科学, 2024, 65(11): 2668-2671.

XU Weidong, LU Qiang, YAO Zhangliang, LI Youfa, FU Haowei, ZHANG Xinyue, DONG Junjie, CAO Kuirong, MA Xinghua. Study on weed control in clear rice field and the resistance of weedy rice species[J]. Journal of Zhejiang Agricultural Sciences, 2024, 65(11): 2668-2671.

图/表 4

参考文献 13

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药剂浓度/ (mL·hm^-2)	稗草	千金子	多花水苋	丁香蓼	异型莎草	杂草稻
3 600	96.0 a	97.0 a	90.8 a	—	100.0 a	88.3 a
2 400	95.0 a	87.4 a	31.7 b	—	98.6 a	89.9 a
1 800	91.0 b	90.2 a	48.9 b	—	100.0 a	86.5 a
1 200	88.2 b	95.2 a	47.2 b	—	100.0 a	86.7 a

药剂浓度/ (mL·hm^-2)	稗草	千金子	多花水苋	丁香蓼	异型莎草	杂草稻
3 600	96.0 a	97.0 a	90.8 a	—	100.0 a	88.3 a
2 400	95.0 a	87.4 a	31.7 b	—	98.6 a	89.9 a
1 800	91.0 b	90.2 a	48.9 b	—	100.0 a	86.5 a
1 200	88.2 b	95.2 a	47.2 b	—	100.0 a	86.7 a

药剂浓度/ (mL·hm^-2)	稗草	千金子	多花水苋	丁香蓼	异型莎草	杂草稻
3 600	100.0 a	98.3 a	84.7 a	84.1 a	96.0 a	97.7 a
2 400	100.0 a	90.7 a	63.3 b	82.2 a	14.0 b	96.9 a
1 800	74.1 b	60.6 b	51.9 b	79.3 a	19.1 b	96.5 a
1 200	16.0 c	15.1 c	52.2 b	1.5 b	32.2 b	92.8 a

药剂浓度/ (mL·hm^-2)	稗草	千金子	多花水苋	丁香蓼	异型莎草	杂草稻
3 600	100.0 a	98.3 a	84.7 a	84.1 a	96.0 a	97.7 a
2 400	100.0 a	90.7 a	63.3 b	82.2 a	14.0 b	96.9 a
1 800	74.1 b	60.6 b	51.9 b	79.3 a	19.1 b	96.5 a
1 200	16.0 c	15.1 c	52.2 b	1.5 b	32.2 b	92.8 a

药剂浓度/ (mL·hm^-2)	稗草	千金子	多花水苋	丁香蓼	异型莎草	杂草稻
3 600	50.6 a	72.7 a	87.3 a	77.8 a	88.6 a	94.6 b
2 400	25.7 b	69.2 a	43.4 b	-5.6 a	88.3 a	93.3 b
1 800	-8.4 c	-2.2 b	41.9 b	30.6 a	64.5 b	98.0 a
1 200	19.7 b	-52.1 c	20.6 b	-16.7 a	28.1 c	80.2 c

洁田稻稻田杂草防控及杂草稻种群耐药性研究

Study on weed control in clear rice field and the resistance of weedy rice species

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种群	毒力回归方程	相关系数	LD₅₀	95%置信区间	抗性倍数
海盐	Y=5.052 4+1.430 4x	0.994 4	0.919 1	0.557 8~1.431 5	1.39
秀洲	Y=5.192 1+1.574 4x	0.997 7	0.755 1	0.453 2~1.146 7	1.14
平湖	Y=5.062 3+1.277 5x	0.975 7	0.893 8	0.518 7~1.441 8	1.35
南湖	Y=5.214 7+1.582 8x	0.986 1	0.731 7	0.436 6~1.110 8	1.10
敏感种群	Y=5.294 4+1.642 8x	0.991 4	0.661 9	0.388 6~1.000 4	1.00

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